Third time’s the charm? That may be what Kendall Jennerwas thinking recently. According to a source, she went under the knife for a third nose job. A rep for the catwalker denies it, but an insider claims that the 21-year-old opted for a subtle sharpening of the tip — a decision that stemmed from Kendall’s growing self-confidence issues. “People think modeling is a constant stream of compliments for her,” the insider dishes, “but most of the time it’s brutal.” “On castings the clients analyze her from head to toe and point out all her flaws.” “Eventually Kendall got tired of people saying her nose wasn’t slim enough so she went and tried to fix it, again. An insider says Kendall made a cosmetic tweak meant to channel her idol, Christy Turlington, and that she’s “thrilled with the results.”